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71 lines
1.6 KiB
Perl
71 lines
1.6 KiB
Perl
#!/usr/bin/env perl
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##
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## Author......: See docs/credits.txt
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## License.....: MIT
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##
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use strict;
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use warnings;
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use MIME::Base64 qw (encode_base64 decode_base64);
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use Crypt::PBKDF2;
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sub module_constraints { [[0, 256], [1, 15], [-1, -1], [-1, -1], [-1, -1]] }
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#pbkdf2(1000,20,sha512)$a2a2ca127df6bc19$77bb5a3d129e2ce710daaefeefef8356c4c827ff";
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sub module_generate_hash
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{
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my $word = shift;
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my $salt = shift;
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my $iterations = shift // 1000;
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my $out_len = shift // 20;
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my $pbkdf2 = Crypt::PBKDF2->new
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(
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hasher => Crypt::PBKDF2->hasher_from_algorithm ('HMACSHA2', 512),
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iterations => $iterations,
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output_len => $out_len
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);
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my $digest = $pbkdf2->PBKDF2 ($salt, $word);
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my $digest_hex = unpack "H*", $digest;
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my $hash = sprintf ('pbkdf2(%i,20,sha512)$%s$%s', $iterations, $salt, $digest_hex);
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return $hash;
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}
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#pbkdf2(1000,20,sha512)$a2a2ca127df6bc19$77bb5a3d129e2ce710daaefeefef8356c4c827ff";
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sub module_verify_hash
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{
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my $line = shift;
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my ($digest, $word) = split (/:([^:]+)$/, $line);
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return unless defined $digest;
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return unless defined $word;
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my ($intro, $salt, $hash_encoded) = split ('$', $digest);
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my ($signature, $iterations, $len, $prf) = split (m/[\(\),]/, $digest);
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return unless ($signature eq 'pbkdf2');
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return unless ($prf eq 'sha512');
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return unless defined $iterations;
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return unless defined $hash_encoded;
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my $hash = pack 'H*',$hash_encoded;
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my $out_len = length ($hash);
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my $word_packed = pack_if_HEX_notation ($word);
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my $new_hash = module_generate_hash ($word_packed, $salt, $iterations, $out_len);
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return ($new_hash, $word);
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}
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1;
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